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Oreshak
in Varna region |
Light effectiveness of photosynthesis and economical lighting for plants
hypothesis: Photosynthesis efficiency by light wavelength (or light colour)
All the food we eat, Visible light (or visible radiation, or electromagnetic waves) band is the region in electromagnetic spectrum from 400 nm (nanometre) to 700 nm. Flora is using light via photosynthesis process. Photosynthetically active radiation curve (PAR) is the graph of the photosynthesis efficiency by light wavelength (or "light color").
Main minimum of the photosynthesis efficiency locates in the green light region of spectrum.
Figure 1.
PAR-curve, white and red light illuminance, power of the white and red light illuminanceFigure 2.Illuminance and power: white (or sunlight) lighting and red lighting. PAR (Photosynthetically Active Radiation).
General idea of the effective illuminance for photosynthesis: Application of red lighting for agriculture.
Lighting by red ultra bright light emitting diodes (LED):
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